From: Richard W.M. Jones <rjones@redhat.com>
Date: Tue, 11 Jun 2019 16:59:04 +0000 (+0100)
Subject: Add tech introductions.
X-Git-Url: http://git.annexia.org/?a=commitdiff_plain;h=789100b7cac6bdc6a5147031415b229edec2b905;p=libguestfs-talks.git
Add tech introductions.
---
diff --git a/2019-tech-introductions/.gitignore b/2019-tech-introductions/.gitignore
new file mode 100644
index 0000000..ceb0adb
--- /dev/null
+++ b/2019-tech-introductions/.gitignore
@@ -0,0 +1,2 @@
+bindings
+history
diff --git a/2019-tech-introductions/1000-introduction.html b/2019-tech-introductions/1000-introduction.html
new file mode 100644
index 0000000..692a6e5
--- /dev/null
+++ b/2019-tech-introductions/1000-introduction.html
@@ -0,0 +1,19 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<div id="titlepage">
+ <p class="title">
+ Introduction to nbdkit, libnbd, IMS, KVM to KVM migrations
+ </p>
+
+ <p class="author">
+ Richard W.M. Jones <br>
+ rjones @ redhat.com
+ </p>
+
+ <p class="abstract">
+
+ </p>
+</div>
+
diff --git a/2019-tech-introductions/2000-nbdkit-universal-connector.html b/2019-tech-introductions/2000-nbdkit-universal-connector.html
new file mode 100644
index 0000000..fee7f77
--- /dev/null
+++ b/2019-tech-introductions/2000-nbdkit-universal-connector.html
@@ -0,0 +1,8 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>The âuniversal connectorâ</h1>
+
+<img src="universal-connector-1.svg"
+ width="80%">
diff --git a/2019-tech-introductions/2100-nbdkit-universal-connector-2.html b/2019-tech-introductions/2100-nbdkit-universal-connector-2.html
new file mode 100644
index 0000000..b5b1955
--- /dev/null
+++ b/2019-tech-introductions/2100-nbdkit-universal-connector-2.html
@@ -0,0 +1,8 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>The âuniversal connectorâ</h1>
+
+<img src="universal-connector-2.svg"
+ width="80%">
diff --git a/2019-tech-introductions/2200-nbdkit-connect-directly.html b/2019-tech-introductions/2200-nbdkit-connect-directly.html
new file mode 100644
index 0000000..122369d
--- /dev/null
+++ b/2019-tech-introductions/2200-nbdkit-connect-directly.html
@@ -0,0 +1,8 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>Why not connect directly?</h1>
+
+<img src="universal-connector-3.svg"
+ width="80%">
diff --git a/2019-tech-introductions/2300-custom-plugins-are-easy-to-write.term b/2019-tech-introductions/2300-custom-plugins-are-easy-to-write.term
new file mode 100755
index 0000000..361110c
--- /dev/null
+++ b/2019-tech-introductions/2300-custom-plugins-are-easy-to-write.term
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+source functions
+
+# Title.
+export title="Custom plugins are easy to write"
+
+# History.
+remember 'cat custom.sh'
+remember 'nbdkit sh custom.sh'
+remember "qemu-io -r -f raw nbd://localhost -c 'r -v 0 512'"
+
+./restore
+terminal
diff --git a/2019-tech-introductions/2400-nbdkit-layers.html b/2019-tech-introductions/2400-nbdkit-layers.html
new file mode 100644
index 0000000..ad8c1ae
--- /dev/null
+++ b/2019-tech-introductions/2400-nbdkit-layers.html
@@ -0,0 +1,15 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>Filters</h1>
+
+<script>
+filters("1")
+
+document.getElementById("filter1-rate").classList.add("highlighted")
+
+plugins()
+
+document.getElementById("plugin-ssh").classList.add("highlighted")
+</script>
diff --git a/2019-tech-introductions/4000-libnbd-why.html b/2019-tech-introductions/4000-libnbd-why.html
new file mode 100644
index 0000000..2ade029
--- /dev/null
+++ b/2019-tech-introductions/4000-libnbd-why.html
@@ -0,0 +1,13 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>libnbd — Something was missing</h1>
+
+<ul>
+<li>
+NBD servers, but no client library.
+<li>
+qemu (<code>qemu-img</code>, <code>qemu-io</code>) was
+the only client
+</ul>
diff --git a/2019-tech-introductions/4010-libnbd-why-2.html b/2019-tech-introductions/4010-libnbd-why-2.html
new file mode 100644
index 0000000..a517e2b
--- /dev/null
+++ b/2019-tech-introductions/4010-libnbd-why-2.html
@@ -0,0 +1,16 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>libnbd — We need a client library</h1>
+
+<ul>
+<li> <b>fio</b>
+— Filesystem I/O tester
+<li> <b>curl</b>
+— Popular download library
+<li> <b>nbdkit-nbd-plugin</b>
+— nbdkitâs server to client bridge
+<li> <b>qemu</b>(!)
+<li> <b>virt-v2v warm migration</b>
+</ul>
diff --git a/2019-tech-introductions/4100-nbd-not-easy-or-efficient.html b/2019-tech-introductions/4100-nbd-not-easy-or-efficient.html
new file mode 100644
index 0000000..6281855
--- /dev/null
+++ b/2019-tech-introductions/4100-nbd-not-easy-or-efficient.html
@@ -0,0 +1,9 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>NBD is easy to implement</h1>
+
+<p>
+... but it's <b>hard to get good performance</b>
+</p>
diff --git a/2019-tech-introductions/4110-nbd-not-easy-or-efficient-2.html b/2019-tech-introductions/4110-nbd-not-easy-or-efficient-2.html
new file mode 100644
index 0000000..73a96e8
--- /dev/null
+++ b/2019-tech-introductions/4110-nbd-not-easy-or-efficient-2.html
@@ -0,0 +1,23 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>NBD is easy to implement</h1>
+
+<pre>
+$ time nbdkit memory 100M \
+ --run 'examples/threaded-reads-and-writes localhost 10809'
+</pre>
+
+<p>
+In <b>three weeks</b>:
+</p>
+
+<ol>
+<li>
+50% faster?
+<li>
+twice as fast?
+<li>
+15 times faster?
+</ol>
diff --git a/2019-tech-introductions/4120-nbd-not-easy-or-efficient-3.html b/2019-tech-introductions/4120-nbd-not-easy-or-efficient-3.html
new file mode 100644
index 0000000..79c88bd
--- /dev/null
+++ b/2019-tech-introductions/4120-nbd-not-easy-or-efficient-3.html
@@ -0,0 +1,35 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>NBD is easy to implement</h1>
+
+<p>
+It's <b>hard to get good performance</b>
+</p>
+
+<pre>
+$ time nbdkit memory 100M \
+ --run 'examples/threaded-reads-and-writes localhost 10809'
+</pre>
+
+<table width="80%">
+<tr>
+<td>
+May 21st 2019
+</td>
+<td> <b>587</b> seconds </td>
+</tr>
+
+<tr>
+<td>
+Jun 11th 2019
+</td>
+<td> <b>38</b> seconds </td>
+</tr>
+
+<tr>
+<td> Ratio </td>
+<td> <b>15</b> times faster </td>
+</tr>
+</table>
diff --git a/2019-tech-introductions/4200-libnbd.html b/2019-tech-introductions/4200-libnbd.html
new file mode 100644
index 0000000..a2c2a41
--- /dev/null
+++ b/2019-tech-introductions/4200-libnbd.html
@@ -0,0 +1,14 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>libnbd is ...</h1>
+
+<ul>
+<li>
+C library
+<li>
+bindings in several languages
+<li>
+Python shell (<code>nbdsh</code>)
+</ul>
diff --git a/2019-tech-introductions/4300-libnbd-example.html b/2019-tech-introductions/4300-libnbd-example.html
new file mode 100644
index 0000000..d3d8db0
--- /dev/null
+++ b/2019-tech-introductions/4300-libnbd-example.html
@@ -0,0 +1,23 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>libnbd is easy to use</h1>
+
+<pre>
+struct nbd_handle *nbd;
+
+nbd = <b>nbd_create</b> ();
+
+<b>nbd_connect_unix</b> (nbd, "/tmp/socket");
+
+<b>nbd_pread</b> (nbd, buf, sizeof buf, 0, 0);
+
+<b>nbd_close</b> (nbd);
+</pre>
+
+<p>
+... also a low level,
+high performance,
+asynchronous (AIO) API
+</p>
diff --git a/2019-tech-introductions/4400-nbdsh-example.term b/2019-tech-introductions/4400-nbdsh-example.term
new file mode 100755
index 0000000..8be607b
--- /dev/null
+++ b/2019-tech-introductions/4400-nbdsh-example.term
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+source functions
+
+# Title.
+export title="nbdsh example"
+
+# History.
+remember 'nbdkit memory 1M'
+remember "nbdsh --connect nbd://localhost -c 'print(h.get_size())'"
+
+./restore
+terminal
diff --git a/2019-tech-introductions/6000-v2v-warm-migrations.html b/2019-tech-introductions/6000-v2v-warm-migrations.html
new file mode 100644
index 0000000..006bf03
--- /dev/null
+++ b/2019-tech-introductions/6000-v2v-warm-migrations.html
@@ -0,0 +1,6 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>virt-v2v warm migrations</h1>
+
diff --git a/2019-tech-introductions/6100-snapshots.html b/2019-tech-introductions/6100-snapshots.html
new file mode 100644
index 0000000..e6e6146
--- /dev/null
+++ b/2019-tech-introductions/6100-snapshots.html
@@ -0,0 +1,7 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>virt-v2v warm migrations</h1>
+
+<img src="warm-migrations.svg" width="80%">
diff --git a/2019-tech-introductions/6200-changed-blocks.html b/2019-tech-introductions/6200-changed-blocks.html
new file mode 100644
index 0000000..2ccc452
--- /dev/null
+++ b/2019-tech-introductions/6200-changed-blocks.html
@@ -0,0 +1,7 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>virt-v2v warm migrations</h1>
+
+<img src="warm-migrations-2.svg" width="80%">
diff --git a/2019-tech-introductions/6300-todo.html b/2019-tech-introductions/6300-todo.html
new file mode 100644
index 0000000..a7b8325
--- /dev/null
+++ b/2019-tech-introductions/6300-todo.html
@@ -0,0 +1,45 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>virt-v2v warm migrations — to do</h1>
+
+<table width="90%">
+<tr>
+<th width="20%" align="left">nbdkit</th>
+<td>
+VDDK <b>extents</b>, <b>CBT</b>,
+and some other minor features
+</td>
+</tr>
+
+<tr>
+<th width="20%" align="left">libnbd</th>
+<td>
+<b>lots of work</b>
+</td>
+</tr>
+
+<tr>
+<th width="20%" align="left">libguestfs</th>
+<td>
+<b>extra tool</b> to handle snapshotting and
+copying
+</td>
+</tr>
+
+<tr>
+<th width="20%" align="left">virt-v2v</th>
+<td>
+unmodified!
+</td>
+</tr>
+
+<tr>
+<th width="20%" align="left">user interface</th>
+<td>
+lots of work
+</td>
+</tr>
+
+</table>
diff --git a/2019-tech-introductions/8000-kvm-to-kvm-introduction.html b/2019-tech-introductions/8000-kvm-to-kvm-introduction.html
new file mode 100644
index 0000000..2f03c0a
--- /dev/null
+++ b/2019-tech-introductions/8000-kvm-to-kvm-introduction.html
@@ -0,0 +1,11 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>KVM to KVM migrations</h1>
+
+<table width="50%">
+<tr> <td> OSP 10 </td> <td> → </td> <td> OSP 16 </td> </tr>
+<tr> <td> RHV </td> <td> → </td> <td> CNV (KubeVirt) </td> </tr>
+<tr> <td> OSP </td> <td> → </td> <td> CNV </td> </tr>
+</table>
diff --git a/2019-tech-introductions/8100-reuse-the-tools.html b/2019-tech-introductions/8100-reuse-the-tools.html
new file mode 100644
index 0000000..2da3cbe
--- /dev/null
+++ b/2019-tech-introductions/8100-reuse-the-tools.html
@@ -0,0 +1,12 @@
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>Not virt-v2v, but reuse the tools</h1>
+
+<ul>
+<li> <b>nbdkit</b>
+<li> <b>qemu-img convert</b>
+<li> virt-v2v <b>metadata model</b>
+<li> libnbd, bindings or nbdsh, maybe
+</ul>
diff --git a/2019-tech-introductions/bashrc b/2019-tech-introductions/bashrc
new file mode 100644
index 0000000..f526961
--- /dev/null
+++ b/2019-tech-introductions/bashrc
@@ -0,0 +1,19 @@
+# -*- shell-script -*-
+
+# Colour ls.
+if [ -f /etc/profile.d/colorls.sh ]; then . /etc/profile.d/colorls.sh; fi
+
+# Fancy prompt colours (see
+# https://wiki.archlinux.org/index.php/Color_Bash_Prompt)
+promptcol='\e[0;32m' ;# colour for the prompt
+commandcol='\e[1;31m' ;# colour for the typed command
+outputcol='\e[0m' ;# colour for command output
+
+export PS1="\n\[$promptcol\]\$ \[$commandcol\]"
+
+trap 'echo -ne "$outputcol"' DEBUG
+
+# Load key bindings (if any).
+bind -f $talkdir/bindings
+
+echo $title
diff --git a/2019-tech-introductions/code.js b/2019-tech-introductions/code.js
new file mode 100644
index 0000000..d167d3a
--- /dev/null
+++ b/2019-tech-introductions/code.js
@@ -0,0 +1,67 @@
+function plugins ()
+{
+ document.write ("\
+<div class=\"plugins\"> \
+<p id=\"caption\">plugins available in nbdkit 1.12</p> \
+<ul> \
+<li id=\"plugin-curl\"> curl \
+<li id=\"plugin-data\"> data \
+<li id=\"plugin-ext2\"> ext2 \
+<li id=\"plugin-file\"> file \
+<li id=\"plugin-floppy\"> floppy \
+<li id=\"plugin-full\"> full \
+<li id=\"plugin-guestfs\"> guestfs \
+<li id=\"plugin-gzip\"> gzip \
+<li id=\"plugin-iso\"> iso \
+<li id=\"plugin-libvirt\"> libvirt \
+<li id=\"plugin-linuxdisk\"> linuxdisk \
+<li id=\"plugin-lua\"> lua \
+<li id=\"plugin-memory\"> memory \
+<li id=\"plugin-nbd\"> nbd \
+<li id=\"plugin-null\"> null \
+<li id=\"plugin-ocaml\"> ocaml \
+<li id=\"plugin-partitioning\"> partitioning \
+<li id=\"plugin-pattern\"> pattern \
+<li id=\"plugin-perl\"> perl \
+<li id=\"plugin-python\"> python \
+<li id=\"plugin-random\"> random \
+<li id=\"plugin-ruby\"> ruby \
+<li id=\"plugin-rust\"> rust \
+<li id=\"plugin-sh\"> sh \
+<li id=\"plugin-split\"> split \
+<li id=\"plugin-ssh\"> ssh \
+<li id=\"plugin-streaming\"> streaming \
+<li id=\"plugin-tar\"> tar \
+<li id=\"plugin-tcl\"> tcl \
+<li id=\"plugin-vddk\"> vddk \
+<li id=\"plugin-zero\"> zero \
+</ul> \
+</div> \
+");
+}
+
+function filters (layer)
+{
+ document.write ("\
+<div class=\"filters\"> \
+<p class=\"filtercaption\">filters available in nbdkit 1.12</p> \
+<ul> \
+<li id=\"filter" + layer + "-blocksize\"> blocksize \
+<li id=\"filter" + layer + "-cache\"> cache \
+<li id=\"filter" + layer + "-cow\"> cow \
+<li id=\"filter" + layer + "-delay\"> delay \
+<li id=\"filter" + layer + "-error\"> error \
+<li id=\"filter" + layer + "-fua\"> fua \
+<li id=\"filter" + layer + "-log\"> log \
+<li id=\"filter" + layer + "-noextents\"> noextents \
+<li id=\"filter" + layer + "-nozero\"> nozero \
+<li id=\"filter" + layer + "-offset\"> offset \
+<li id=\"filter" + layer + "-partition\"> partition \
+<li id=\"filter" + layer + "-rate\"> rate \
+<li id=\"filter" + layer + "-readahead\"> readahead \
+<li id=\"filter" + layer + "-truncate\"> truncate \
+<li id=\"filter" + layer + "-xz\"> xz \
+</ul> \
+</div> \
+");
+}
diff --git a/2019-tech-introductions/custom.sh b/2019-tech-introductions/custom.sh
new file mode 100755
index 0000000..48bdcb4
--- /dev/null
+++ b/2019-tech-introductions/custom.sh
@@ -0,0 +1,13 @@
+#!/bin/bash -
+
+case "$1" in
+ get_size)
+ echo 1M ;;
+ pread)
+ for i in `seq 1 $(( $3/16 ))`; do
+ echo -ne 'HELLO BEIJING __'
+ done
+ ;;
+ *)
+ exit 2;;
+esac
diff --git a/2019-tech-introductions/functions b/2019-tech-introductions/functions
new file mode 100644
index 0000000..d5347e7
--- /dev/null
+++ b/2019-tech-introductions/functions
@@ -0,0 +1,43 @@
+# -*- shell-script -*-
+# This creates some standard functions. See also $talkdir/bashrc
+# which runs in the same bash context as the terminal.
+
+# Place any local environment variables and settings in "local".
+if [ -f local ]; then source local; fi
+
+# Environment variables.
+export HISTFILE=$talkdir/history
+export PATH=$talkdir:$PATH
+export EDITOR="emacs -nw"
+
+# Ditch libvirt for stability :-(
+export LIBGUESTFS_BACKEND=direct
+
+# remember <command> <args ...>
+#
+# This function does two things: (1) It adds the command and arguments
+# to the shell history, so that commands can be recalled using up
+# arrow or reverse search. (2) It makes a function key recall the
+# command. The first command is assigned to F2, the second to F3 and
+# so forth.
+
+rm -f $HISTFILE
+touch $HISTFILE
+rm -f $talkdir/bindings
+touch bindings
+
+fnum=2
+keys=(- OP OQ OR OS '[15~' '[17~' '[18~' '[19~' '[20~' '[21~')
+
+remember ()
+{
+ echo "$@" >> $HISTFILE
+ echo \"\\e${keys[$fnum]}\":\"\\C-k \\C-u"$@"\" >> $talkdir/bindings
+ ((fnum++))
+}
+
+terminal ()
+{
+ chmod -w $HISTFILE
+ /bin/bash --rcfile $talkdir/bashrc "$@"
+}
diff --git a/2019-tech-introductions/restore b/2019-tech-introductions/restore
new file mode 100755
index 0000000..3976ea5
--- /dev/null
+++ b/2019-tech-introductions/restore
@@ -0,0 +1,5 @@
+#!/bin/bash -
+
+killall nbdkit >&/dev/null
+
+exit 0
diff --git a/2019-tech-introductions/run b/2019-tech-introductions/run
new file mode 100755
index 0000000..39d43f6
--- /dev/null
+++ b/2019-tech-introductions/run
@@ -0,0 +1,22 @@
+#!/bin/bash -
+# Run the talk.
+
+set -e
+
+# Avoid GNOME keyring stupidity
+export GNOME_KEYRING_CONTROL=
+export GNOME_KEYRING_PID=
+
+# No proxy.
+unset http_proxy
+unset https_proxy
+unset ftp_proxy
+
+# Remove any old nbdkit processes etc.
+./restore
+
+# Run techtalk.
+techtalk-pse
+#~/d/techtalk-pse/techtalk-pse
+
+./restore
diff --git a/2019-tech-introductions/style.css b/2019-tech-introductions/style.css
new file mode 100644
index 0000000..35588a8
--- /dev/null
+++ b/2019-tech-introductions/style.css
@@ -0,0 +1,243 @@
+/* Red Hat red is rgb(204,0,0). */
+
+body {
+ background: url(redhat.png) no-repeat;
+ background-position: 98% 0;
+ /* font-size: 28pt; */ /* For max */
+ font-size: 20pt; /* For 1024x768 */
+ /* font-family: liberation, helvetica; */
+ font-family: helvetica;
+
+ /* Can be used to scale the whole document. */
+ /*transform: translate(-10%,-10%) scale(0.75,0.75);*/
+}
+
+body td, body th { /* why?? */
+ font-size: 24pt;
+ padding-bottom: 8px;
+}
+
+h1 {
+ color: rgb(204,0,0);
+ /*font-size: 48px;*/
+ font-size: 40px;
+ top: 8;
+ left: 0;
+ border-bottom: 2px solid rgb(204,0,0);
+}
+
+h2 {
+ color: rgb(204,0,0);
+ font-size: 32px;
+ font-style: italic;
+ border-bottom: 2px solid rgb(204,0,0);
+}
+
+b {
+ color: rgb(204,0,0);
+}
+
+/* Title page. */
+div#titlepage {
+ margin-top: 100px;
+ width: 80%;
+ margin-left: 10%;
+}
+
+div#titlepage p.title {
+ color: rgb(204,0,0);
+ font-weight: bold;
+ font-size: 48px;
+ text-align: left;
+}
+
+div#titlepage p.author {
+ font-size: 36px;
+ text-align: left;
+}
+
+div#titlepage p.abstract {
+ font-size: 28px;
+ text-align: left;
+}
+
+/* Code */
+pre.code {
+ margin-left: 1em;
+ background: #eee;
+}
+
+code {
+ color: rgb(204,0,0);
+}
+
+/* Bullet points */
+li {
+ padding-bottom: 16px;
+}
+
+/* Plugins box. */
+div.plugins {
+ background: #f8f8ff;
+ border: 1px solid rgb(204,0,0);
+ border-radius: 15px;
+ margin-left: auto;
+ margin-right: auto;
+ width: 800px;
+ height: 400px;
+ /* Position relative is needed so that items may be
+ positioned inside. */
+ position: relative;
+}
+
+div.plugins p#caption {
+ position: absolute;
+ bottom: -5px; right: 5px;
+ color: rgb(204,0,0);
+ text-align: right;
+ font-size: 16px;
+ font-weight: bold;
+}
+
+div.plugins ul {
+ position: absolute;
+ top: 10%;
+ width: 700px;
+ height: 380px;
+ column-count: 4;
+ list-style-type: none;
+ margin: 0;
+}
+
+div.plugins ul li {
+ padding: 0px;
+ margin: 5px;
+}
+
+div.plugins ul li.highlighted {
+ border: 1px solid rgb(204,0,0);
+ background: #fff;
+ padding-left: 10px;
+ color: rgb(204,0,0);
+ border-radius: 20px;
+ font-weight: bold;
+}
+
+/* Filters box. */
+div.filters {
+ background: #f8fff8;
+ border: 1px solid rgb(204,0,0);
+ border-radius: 15px;
+ margin-left: auto;
+ margin-right: auto;
+ width: 800px;
+ height: 200px;
+ /* Position relative is needed so that items may be
+ positioned inside. */
+ position: relative;
+}
+
+div.filters p.filtercaption {
+ position: absolute;
+ bottom: -5px; right: 5px;
+ color: rgb(204,0,0);
+ text-align: right;
+ font-size: 16px;
+ font-weight: bold;
+}
+
+div.filters ul {
+ position: absolute;
+ top: 10%;
+ width: 700px;
+ height: 180px;
+ column-count: 4;
+ list-style-type: none;
+ margin: 0;
+}
+
+div.filters ul li {
+ padding: 0px;
+ margin: 5px;
+}
+
+div.filters ul li.highlighted {
+ border: 1px solid rgb(204,0,0);
+ background: #fff;
+ padding-left: 10px;
+ color: rgb(204,0,0);
+ border-radius: 20px;
+ font-weight: bold;
+}
+
+/* For images which must be centered on the page. */
+div.allcenter {
+ display: flex;
+ justify-content: center;
+ align-items: center;
+ height: 50vw;
+}
+
+div.all-center img {
+}
+
+/* Outlined text. */
+.outline {
+ text-shadow: 2px 2px 0 rgb(204,0,0),
+ -2px 2px 0 rgb(204,0,0),
+ 2px -2px 0 rgb(204,0,0),
+ -2px -2px 0 rgb(204,0,0),
+ 0px 2px 0 rgb(204,0,0),
+ 0px -2px 0 rgb(204,0,0),
+ -2px 0px 0 rgb(204,0,0),
+ 2px 0px 0 rgb(204,0,0),
+ 4px 4px 0 rgb(204,0,0),
+ -4px 4px 0 rgb(204,0,0),
+ 4px -4px 0 rgb(204,0,0),
+ -4px -4px 0 rgb(204,0,0),
+
+ 0px 4px 0 rgb(204,0,0),
+ 0px -4px 0 rgb(204,0,0),
+ -4px 0px 0 rgb(204,0,0),
+ 4px 0px 0 rgb(204,0,0),
+ 2px 4px 0 rgb(204,0,0),
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+ 2px -4px 0 rgb(204,0,0),
+ -2px -4px 0 rgb(204,0,0),
+ 4px 2px 0 rgb(204,0,0),
+ -4px 2px 0 rgb(204,0,0),
+ 4px -2px 0 rgb(204,0,0),
+ -4px -2px 0 rgb(204,0,0),
+
+ 4px 4px 0 rgb(255,128,128),
+ -4px 4px 0 rgb(255,128,128),
+ 4px -4px 0 rgb(255,128,128),
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+ 0px 4px 0 rgb(255,128,128),
+ 0px -4px 0 rgb(255,128,128),
+ -4px 0px 0 rgb(255,128,128),
+ 4px 0px 0 rgb(255,128,128),
+ 8px 8px 0 rgb(255,128,128),
+ -8px 8px 0 rgb(255,128,128),
+ 8px -8px 0 rgb(255,128,128),
+ -8px -8px 0 rgb(255,128,128),
+
+ 0px 8px 0 rgb(255,128,128),
+ 0px -8px 0 rgb(255,128,128),
+ -8px 0px 0 rgb(255,128,128),
+ 8px 0px 0 rgb(255,128,128),
+ 4px 8px 0 rgb(255,128,128),
+ -4px 8px 0 rgb(255,128,128),
+ 4px -8px 0 rgb(255,128,128),
+ -4px -8px 0 rgb(255,128,128),
+ 8px 4px 0 rgb(255,128,128),
+ -8px 4px 0 rgb(255,128,128),
+ 8px -4px 0 rgb(255,128,128),
+ -8px -4px 0 rgb(255,128,128);
+}
+
+/* Warning symbol. */
+span.warning {
+ background-color: yellow;
+ font-weight: bold;
+}
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diff --git a/2019-tech-introductions/universal-connector-2.svg b/2019-tech-introductions/universal-connector-2.svg
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